Pulley



HLH. KENDRIGK.

(Nd Model.) l

PULLEY.

Patented Apr. 19, 1892.

Uivrrn rares ATENT OICE.

HILAND H. KENDRIOK, OF FULTON, NEW YORK.

PU LLEY.

SPECIFICATION forming part of Letters Patent No. 473,119, dated April19, 1892.

Application filed June 20l 1891.

To a/ZZ whom it may concern:

Be it known that I, HILAND H. KENDRICK, of Fulton, in the county ofOswego, in the State of New York, have invented new. and

useful Improvements in Pulleys, of which the following, taken inconection with the accompanying drawings, is a full, clear, and eXactdescription.

My invention relates to split pulleys, and myobject is to improve theconstruction thereof in the details hereinafter specifically described;and to that end it consists in the several novel features ofconstruction and operationhereinafterdescribed. Itis constructed asfollows, reference being had to the accompanying drawings, in which-Figure l is a side elevation of the pulley complete, except that onepart of the housing is removed. Fig. 2 isa plan View of the arms of theends, broken away at one end to showthe connecting dowel-pin. Fig. 3 isa side elevation of part of one of the arms, showing how it is rabbetedtransversely and the holes to receive the dowel-pin. Fig. 4 is a sectiontaken on line X X, Fig. l. Fig. 5 is a plan elevation of one of thebushing-sections. Fig. 6 is a diametrical section showing thehousingdisks covering the cross-beams and all ofthe space between thehub and the rim. Fig. 7 is a vertical sectional elevation transverse tothe cross-beams and longitudinal to the bushing to show more clearly thespace between the cross-beams and the lug upon the bushingsectionsfitting into said space on each side.

A is the rim of the pulley, consisting of two equal sections, eachsection being built up from layers l of wood, cut to shape and securedtogether in the ordinary manner in general, and 2 2 are the cross-beamsconnecting the ends of the rim-sections, each beam having its outer endrabbeted, as at 3, and a hole 4 bored transversely through the rabbetedportion of said beam, and such rabbeting reduces the end of each beam,so that it is of equal thickness with that of the layers composing therim, and these beam ends are laid up with their layers and securedbetween them, their outer extremities being flush with the outer face ofthe rim and also leaving p art of the rabbeted portion within the rim,as will be seen in Figs. 4 or 6. A dowel-pin 45 is secured in each ofthe holes in each beam in Serial No. 396,939. (No model.)

one section, leaving a projecting point which enters the hole in thebeam in the Opposite rim-section, and thus these pins operate as guidesto bring the ri m-sections together properly and also aid in holdingthem together and prevent lateral displacement of the ends thereof. Thecross-beams 2 are arranged parallel to each other, as shown in Fig.4,leaving a space between them. A bushing-seat 6 is cut in the beamstransversely thereto and one-half in the beams of each rim-section, and7 is a sectional bushing mounted in said seat. Each section of thebushing is rabbeted longitudinally, as at 8, and is further providedwith a lug 9, which fits in the transverse recess a between thevcross-beams and prevents any longitudinal movement of said section inits seat. Braces lO are provided for each rimsection, having their outerends laid up and secured in the layers and having their inner ends secured between the cross-beams by pins or bolts 1l. These braces arenon-radial to the rim-sections and also are not tangential to the shaftor hub of the pulley and also do not bearv against the bushing, but doserve the purpose of stiffening and supporting the rim of the pulley andpreventing it from being forced out of a true circular form under thestrain upon it. The -joint between the ends of the layers of therim-sections may be of any form desired. The inner bolts 12, insertedthrough the cross-beams, secure the rim-sections together centrally andupon the shaft, and the outer -ones hold the ends of the rim-sectionstogether. l/Vhen so secured together, I place the then incomplete pulleyin a lathe, turn off the outer face of lthe rim, and also turn out uponthe inside of the rim apart of the rim-layer next outside of thecrossbeams, thus creating a flange 13 around the inner face of dachrim-section. I cut such a flange on both sides of the pulley-sections,and in so doing the cutting tool will pass through the rabbeted portionsof the crossbeams, which are left open inside of the rimlayers for thisprecise purpose. These flanges support the curved edges of thehousing-disks 14, which fill or inclose the open spaces between thecross-beams and rim in each section and are there secured removably byAIOO filled by blocks 16, which come up fiush with the unrabbetedportions of said beams and abut at one end against the rahbet-shoulderon said beams, and at the other end abut against the rim-layers. Suchflanges are essential in order to support the curved edge of each 0f thehousing-sections, and such flanges can only be made absolutely true byturning oil? the rim-layer after it is laid up, and it is essential thatthe cutting tool should not strike the cross-beams alone, as they aremuch thicker than the layers of the rim and are rabbeted down to thesame thickness, so that the flanges can be turned by a continuous out ofthe tool. The blocks 1G restore the crossbeams to their full thicknessand to substantially the same strength as though they were not rabbeted,at least as far as their ability to stand longitudinal strain isconcerned, and to that end they form shoulders upon the cross-beams,bearing against the rim-layers, thus reinforcing the beams.

That I claim as my invention, and desire to secure by Letters Patent,isw

l. A split pulley comprising a sectional rim, crosshea1nsrabbeted upontheir ends and extending through the rim sections, flanges upon theinner sides of the rim-sections, housingdisks inclosing the sides of thepulley, a sectional bushing seated in the cross-beams, blocks fillingthe cross-beam rabbets inside of the riin, and means to secure thesections together, in combination, as set forth.

2. A split pulley comprising a sectional rim, cross-beams rabbeted upontheir en ds and extending through the rim-sections, doiyelpin guidesconnecting the ends of the rimsections, flanges upon the inner sides ofsaid sections, housing-disks inclosing the sides of the pulley, asectional bushingr seated in the cross-beams, hloeks Filling thecross-beam rabbets inside of the rim, and means to secure the sectionstogether, in combination, as set forth.

In Witness whereof I have hereunto set my hand this Sth day of June,1891.

lliLAND il. KENDRIUK. In presence of- HOWARD P. DENisoN, C. B. KINNE.

